Just got the pearl 3 days ago, I've already transferred a couple files in, but that was 2 days ago, when I try this again, it keeps saying "An error occurred while transferring (file) to the Blackberry device. An error occurred while communicating with the Blackberry device (Unknown)."

device memory, but the files are under the max 2.86mb, and i still have 30 megs left. it copies the file midway in the bar, then it gets that message. i can upload pictures, but not music or videos. I'm planning on getting a micro card sometime soon though.

When you put a memory card into a BB it puts it's own folders on it. Music, Ringtones, Pictures, and Videos. The device memory doesn't have the videos folder. So you might have to put them onto a memory card in the video folder.

Before I got my memory card, when I was transferring music files to the device memory I had to put them into the ringtones folder because I didn't have a music folder.